SignaGel is a highly conductive multi-purpose saline electrolyte gel for use with the Acu-Point Probe and the Snail Electrode. Enhances SCENAR , Micro-current and biofeedback devices. Bacteriostatic, non-irritating, non-gritty. Water-soluble and non-staining. 5 year shelf life. Comes in an 8oz tube with cap stand to always see how much gel is left, Not for use on electro therapy pads or micro-current garments, we suggest using SignaSpray to prolong the lifespan of electro pads and garments.